| Name | Onosma multiramosum var. mekongensis I. M. Johnston |
| Authorship | I. M. Johnston |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Onosma multiramosum Handel-Mazzetti |
| Citation | 1951 J. Arnold Arbor. 32: 223 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Onosma multiramosum var. mekongensis I. M. Johnston |
| Identification made in | [no date] (1) |
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